/** @file */
//language.h
#ifndef LANGUAGE_H
#define LANGUAGE_H


#include "config.h"
#include "macros.h"
#include <inttypes.h>
#ifdef DEBUG_SEC_LANG
    #include <stdio.h>
#endif //DEBUG_SEC_LANG

#define PROTOCOL_VERSION "1.0"

#if (LANG_MODE == 0) //primary language only
#define PROGMEM_I2 __attribute__((section(".progmem0")))
#define PROGMEM_I1 __attribute__((section(".progmem1")))
#define PROGMEM_N1 __attribute__((section(".progmem2")))
#define _I(s) (__extension__({static const char __c[] PROGMEM_I1 = s; &__c[0];}))
#define ISTR(s) (s) // declare a translatable string
#define _i(s) _I(s) // declare a translatable string and return the translated form
#define _T(s) (s)   // return translated string from reference
#define _O(s) (s)   // return original (untranslated) string from reference
#else //(LANG_MODE == 0)
// section .loc_sec (originaly .progmem0) will be used for localized translated strings
#define PROGMEM_I2 __attribute__((section(".loc_sec")))
// section .loc_pri (originaly .progmem1) will be used for localized strings in english
#define PROGMEM_I1 __attribute__((section(".loc_pri")))
// section .noloc (originaly progmem2) will be used for not localized strings in english
#define PROGMEM_N1 __attribute__((section(".noloc")))
#define _I(s) (__extension__({static const char __c[] PROGMEM_I1 = "\xff\xff" s; &__c[0];}))
#define ISTR(s) "\xff\xff" s
#define _i(s) lang_get_translation(_I(s))
#define _T(s) lang_get_translation(s)
#define _O(s) (s + 2)
#endif //(LANG_MODE == 0)

#define _N(s) (__extension__({static const char __c[] PROGMEM_N1 = s; &__c[0];}))
#define _n(s) _N(s) // declare and return untranslated string
#define _R(s) (s)   // return reference to translatable string (for warning suppression)

/** @brief lang_table_header_t structure - (size= 16byte) */
typedef struct
{
	uint32_t magic;      //+0
	uint16_t size;       //+4
	uint16_t count;      //+6
	uint16_t checksum;   //+8
	uint16_t code;       //+10
	uint32_t signature;  //+12
} lang_table_header_t;

/** @brief lang_table_t structure - (size= 16byte + 2*count) */
typedef struct
{
	lang_table_header_t header;
	uint16_t table[];
} lang_table_t;

/** @name Language indices into their particular symbol tables.*/
///@{
#define LANG_ID_PRI 0
#define LANG_ID_SEC 1
///@}

/** @def LANG_ID_FORCE_SELECTION
 *  @brief Language is not defined and it shall be selected from the menu.*/
#define LANG_ID_FORCE_SELECTION 254

/** @def LANG_ID_UNDEFINED
 *  @brief Language is not defined on a virgin RAMBo board. */
#define LANG_ID_UNDEFINED 255

/** @def LANG_ID_DEFAULT
 *  @brief Default language ID, if no language is selected. */
#define LANG_ID_DEFAULT LANG_ID_PRI

/** @def LANG_MAGIC
 *  @brief Magic number at begin of lang table. */
#define LANG_MAGIC 0x4bb45aa5

/** @name Language codes (ISO639-1)*/
///@{
#define LANG_CODE_XX 0x3f3f //!<'??'
#define LANG_CODE_EN 0x656e //!<'en'
#define LANG_CODE_CZ 0x6373 //!<'cs'
#define LANG_CODE_DE 0x6465 //!<'de'
#define LANG_CODE_ES 0x6573 //!<'es'
#define LANG_CODE_FR 0x6672 //!<'fr'
#define LANG_CODE_IT 0x6974 //!<'it'
#define LANG_CODE_PL 0x706c //!<'pl'
#ifdef COMMUNITY_LANGUAGE_SUPPORT //Community language support
#ifdef COMMUNITY_LANG_GROUP1_NL
#define LANG_CODE_NL 0x6e6c //!<'nl'
#endif // COMMUNITY_LANG_GROUP1_NL
#ifdef COMMUNITY_LANG_GROUP1_SV
#define LANG_CODE_SV 0x7376 //!<'sv'
#endif // COMMUNITY_LANG_GROUP1_SV
#ifdef COMMUNITY_LANG_GROUP1_NO
#define LANG_CODE_NO 0x6E6F //!<'no'
#endif // COMMUNITY_LANG_GROUP1_NO
#ifdef COMMUNITY_LANG_GROUP1_DA
#define LANG_CODE_DA 0x6461 //!<'da'
#endif // COMMUNITY_LANG_GROUP1_DA
#ifdef COMMUNITY_LANG_GROUP1_SL
#define LANG_CODE_SL 0x736C //!<'sl'
#endif // COMMUNITY_LANG_GROUP1_SL
#ifdef COMMUNITY_LANG_GROUP1_HU
#define LANG_CODE_HU 0x6875 //!<'hu'
#endif // COMMUNITY_LANG_GROUP1_HU
#ifdef COMMUNITY_LANG_GROUP1_LB
#define LANG_CODE_LB 0x6C62 //!<'lb'
#endif // COMMUNITY_LANG_GROUP1_LB
#ifdef COMMUNITY_LANG_GROUP1_HR
#define LANG_CODE_HR 0x6872 //!<'hr'
#endif // COMMUNITY_LANG_GROUP1_HR
#ifdef COMMUNITY_LANG_GROUP2_LT
#define LANG_CODE_LT 0x6C74 //!<'lt'
#endif // COMMUNITY_LANG_GROUP2_LT
#ifdef COMMUNITY_LANG_GROUP1_SK
#define LANG_CODE_SK 0x736b //!<'sk'
#endif // COMMUNITY_LANG_GROUP1_SK
#ifdef COMMUNITY_LANG_GROUP1_RO
#define LANG_CODE_RO 0x726F //!<'ro'
#endif // COMMUNITY_LANG_GROUP1_RO
//Use the 3 lines below as a template and replace 'QR', '0X7172' and 'qr'
//#ifdef COMMUNITY_LANG_GROUP1_QR
//#define LANG_CODE_QR 0x7172 //!<'qr'
//#endif // COMMUNITY_LANG_GROUP1_QR
#endif // COMMUNITY_LANGUAGE_SUPPORT
///@}

#if defined(__cplusplus)
extern "C" {
#endif //defined(__cplusplus)

/** @brief Currectly active language selection.*/
extern uint8_t lang_selected;

#if (LANG_MODE != 0)
extern const char _SEC_LANG[LANG_SIZE_RESERVED];
extern const char* lang_get_translation(const char* s);
#define _SEC_LANG_TABLE ((uint16_t)&_SEC_LANG)
#endif //(LANG_MODE != 0)

/** @brief selects language, eeprom is updated in case of success */
extern uint8_t lang_select(uint8_t lang);
/** @brief performs checksum test of secondary language data */
extern uint8_t lang_check(uint16_t addr);
/** @return total number of languages (primary + all in xflash) */
extern uint8_t lang_get_count(void);
/** @brief reads lang table header and offset in xflash or progmem */
extern uint8_t lang_get_header(uint8_t lang, lang_table_header_t* header, uint32_t* offset);
/** @brief reads lang code from xflash or progmem */
extern uint16_t lang_get_code(uint8_t lang);
/** @return localized language name (text for menu item) */
extern const char* lang_get_name_by_code(uint16_t code);
/** @brief reset language to "LANG_ID_FORCE_SELECTION", epprom is updated */
extern void lang_reset(void);
/** @retval 1 language is selected */
extern uint8_t lang_is_selected(void);

#ifdef DEBUG_SEC_LANG
extern const char* lang_get_sec_lang_str_by_id(uint16_t id);
extern uint16_t lang_print_sec_lang();
#endif //DEBUG_SEC_LANG

extern void lang_boot_update_start(uint8_t lang);

#if defined(__cplusplus)
}
#endif //defined(__cplusplus)

#define CAT2(_s1, _s2) _s1
#define CAT4(_s1, _s2, _s3, _s4) _s1

#include "messages.h"


#endif //LANGUAGE_H

